Hi everyone! Read through the material below, watch the videos, work on the Word lecture and follow up with your instructor if you have questions.

Learning Outcomes.

• Assign probabilities to events using counting methods.

Topic. This lesson covers: Experiments Having Equally Likely Outcomes

• Introductory Statistics by Sheldon Ross, 3rd edition: Sections 4.4

WeBWorK.  Continue working on Set 3.1

Word Lecture #7

#### Learning Outcomes

• Assign probabilities to events using counting methods.
• #### Common Resources

Videos
The Applied View

Watch the video Probability Models.

1. What is a probability model?
2. Describe the sample space for the sum of two dice.
3. What is the probability of rolling two dice and getting a sum of seven?
4. If you know the probability that event A occurs, how do you calculate the probability that event A does not occur?
5. What probability can you find using the Addition Rule?
6. What probability can you find using the Multiplication Rule?
Exit Ticket

How many 5-person committees are possible from a group of 11 people if:

a) There are no restrictions.

b) Both Jim and Mary must be in the committee.

c) Either Jim or Mary (but not both) must be on the committee.